There is now enough evidence to proceed with clinical trials for the controversial vein-opening therapy for multiple sclerosis known as the Zamboni procedure, the federal government says…NDP health critic Libby Davies said the announcement is a "step forward" but agreed that it should have been made months ago. "It's taken the government an incredibly long time to even get to this point," she said. Davies also said this won't put an end to the political pressure MPs in Ottawa have been under to help patients access the treatment. She said the health minister should disclose all relevant information related to this decision, and provide more details about how the clinical trials are going to operate, and how much money will be dedicated to them.